TempDB Issue

My ASP.NET application requires me to create various temporary tables in TEMPDB. There is a problem that I am facing for which I need a solution badly.

There is a class which creates a temporary table in TEMPDB.
There is another class which needs to use this temporary table.

The issue is once the first class is exited or the connection to the database is closed, the temporary table vanishes and there is a runtime error thrown by the second class as it cannot find the temporary table.

Is there any way I can persist the tables in TEMPDB for subsequent operations?

Any help or clue in this regard would be a major help



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Tempdb Is Skipped. You Cannot Run A Query That Requires Tempdb

Has anyone seen the SQL Server error:

"tempdb is skipped. You cannot run a query that requires tempdb"?

We're running a .Net web application with a SQL Server 2000 backend, and we get the error intermittently. Restarting the SQL Server service seems to fix it, as it causes tempdb to be rebuilt, but this isn't a long term solution. Any direction or hints would be greatly appreciated. Thanks!
- Mike

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Hi

Being new to SQL server I would like some information regarding the tempdb database.

I user SQL Server 2000.

At present I appear to be backing up my tempdb but it has been failing since way back. It gives me this error when trying to bakup the database:

Executed as user: NT AUTHORITYSYSTEM. Backup and restore operations are not allowed on database tempdb. [SQLSTATE 42000] (Error 3147) BACKUP DATABASE is terminating abnormally. [SQLSTATE 42000] (Error 3013). The step failed.

Can someone give me a basic grounding as to what the tempdb is used for and should I back it up or not?

Thanks in advance

Neil.

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Hello,
My db tempdb is very big (55 Go), how can i reduce it or erase it and why it's so big ?

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We are using Peoplesoft HRMS version 7.0 on NT Server 4.0 and SQL Server 6.5, service packs on both up-to-date.

The server is a HP LX Pro with 4 200 MHz 1MB cache processors with 2,560 MB of RAM and 18 9GB drives configured with different combinations of RAID 1, 1+0, and 5.

The database is 2.3GB in actual size with the specific size of 6GB for data and 2GB for log on separate RAIDs.

We would like to use tempdb in RAM to boost the speed of complex queries that use the tempdb for intermediate working tables.

We would like to know of any experience of running tempdb in RAM, issues to overcome, of how to setup.

There are articles and books not recommending using tempdb in RAM. Comments anyone?

Note: Have looked in SQL Server DBA Survival Guide, and SQL Server Unleashed, along with the normal MS Documentation, technet, online books, and knowledge base searches.

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Hi

When should I put tempdb in RAM and when should I not ?

Thanks in advance

Vijay

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System: Pentium II - Dual 450. 13 GIG RAID. 128 MB RAM.

Everything I've ever heard or seen says not to put tempDB in RAM, citing reasons of negligible benefit or even worse performance as it steals memory from SQL's cache memory.

My issue is I need to take anywhere from 500 to 3000 records (games played) in a batch every five minutes from a table, ordered by game id. There's no guarantee of sequential order to how the records are inserted, so I need to do an ORDER BY in my query. I also do a stored procedure for ranking that requires an ORDER BY.

The performance difference between the two is staggering. 1000 records with a 200 mb tempdb database (not in RAM) takes about 300 seconds. With a 16 MB tempdb database IN ram, it takes just under 127 seconds. Only problem? I'm constantly getting, after a few batches have run, "out of space in syslogs for tempdb ram messages. "

Is there a way to net such performance from tempdb without putting it in RAM, and if not, is there a way to explicity clear out tempdb. Thanks for any help.

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Hi,

I moved my tempdb (2MB) to RAM and restarted the server. It did restart but when I tried to connect thru ISQL, it gave me an ERROR -

A connection could not be established to <server-name> - DB-Library. Unable to Connect.

What could be the possible reason.

To move tempdb to RAM, do i just have to change the values of the MEMORY and TEMPDB IN RAM parms and restart or do I have to do anything else.

Please help.

Thanks
Nishant

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Hi! How can I change the default physical location of the tempdb.
In the setup , you will only be prompted the directory for the software
and the directory for the data.

In sq6.5, you can move the tempdb out of the master device by putting it to
ram and changing the default device. But in sql7.0 it is separated from
the master but the physical device is located the same as the other data files.

Appreciate any inputs..
Thanks.
vic

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I read an article on this site by Michael Hotek re "Basic SQL Server 6.5 Configuration Options". In the paragraph about TempDB he says that you should always avoid using Temp tables in stored procs. I use this feature a lot when trying to do "not in" type queries (I filter out a portion of a larger table and then use the "not in" on the temp table rather than the entire table.)
Is there a better way to run a Not in query. I have the table well indexed (i think) but it seems to do a full table scan if I use the entire table.

Any ideas???

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Hi

I get a message:

Error : 933, Severity: 22, State: 1
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I use sqlserver -T4022 to start my SQL Server since it will not start with out it. When I start sqlserver without the option, it tells me that

Error : 615, Severity: 21, State: 1
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I just want my SQL Server back. Please help!

Thanks
Betty Lee

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Hello All~

I have a problem with Tempdb database on SQL 6.5 server.....when i create a temporary table,
i block other users in other databases. Actually i run a stored procedure which creates a temporary table and then the procedure insets some values of a table from my test database. When the spored procedure is executed, users in other databases also get blocked and no new user will be allowd to log on to the server. When i check as to what the other users are executing, i find that they are also creting or droping a temp table.
So i will have to either kill my SP or let it finish and continue blocking other users.

As of now, i am not able to find a reason for that and i try to run the Stored procedure in offpeak hrs.

I have not played around much with Temp tables in SQL 6.5. Pl do suggest me as to what to do....

Some details you would be interested on :

Server - SQL Server 6.5
Front End - Great Plains
Size of Tempdb - Data Space Available( It says shared with data)
database_name database_size unallocated space
------------------------------ ------------------ ------------------
tempdb 1502.00 MB -6301.82 MB

reserved data index_size unused
------------------ ------------------ ------------------ ------------------
7991108 KB 7996222 KB 72 KB -5186 KB


Hope this information helps.

Thanks in Advance...

Siv

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What am I doing wrong?

Thanx for your time
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I thought I could detach it, and attach a new file, but makes me nervous without knowing if thatís correct.

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Hi All,

I am trying to get some information about tempdb database. I've tried BOL but I couldn't find a whole lot of info. I am trying to find out what size should tempdb be to not to cause problems. Also, I am trying to shrink tempdb by using shrink database option in EM, but it only shrinks the tempdb transaction log not the datafile, and I don't know why it is happening.

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Shashu

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Justin

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Ali

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Hi,


THis is sql server 6.5 question.
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It's extremely urgent.

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Hello!
This is error message I discovered in NT even viewer:
c:MSSQL7DATATEMPDB.MDF: Operating system error 112(There is not enough space on the disk.) encountered.

In SQL Server error log the errors are:
Error: 1101, Severity: 17, State: 10

Could not allocate new page for database 'TEMPDB'. There are no more pages available in filegroup DEFAULT. Space can be created by dropping objects, adding additional files, or allowing file growth..

Currently tempdb rezides on C drive and it's almost out of space.
What should I do?
Detach tempdb and then move to different drive?
What's the procedure?

Thanks

Lena

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is it ok to move the this from the c drive to another drive?

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Hi All
if temdb grows and use all the disk space and then after log backup or other clean up process its size got reduced but it is still holding the space it was grown upto. In this case what would be ideal to do restart server/services or is it possible to reduce the space alocated to tempdb through properties.

any help will be appreciated.

Thanks

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To make a long story short:

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I was getting horrible I/O performance (to be expected) which prompted me to put in some more drives and move the tempdb files. This helped a bit, but now I am noticing some very funky things.

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For a variety of reasons, the C drive on our Production Server is low on disk space. When we ordered the server it came installed with SQL Server 2005 and they defaulted the System databases to the C drive. All our client dbs are on the F drive. The tempdb database gets fairly large every day and consumes a large portion of what is left of the C drive. Every evening, after work hours, I have to stop SQL Server, delete the tempdb.mdf and ldf files and restart. Is there a way to move the default location of the tempdb files to the F drive? I do not want to repartition the hard drive or uninstall and reinstall SQL Server.

Thanks in advance,

Dave

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